breaking(ui-shell): remove GlobalHeader, SideNav folders (#1223)

* breaking(ui-shell): remove GlobalHeader/SideNav folders

* Run "yarn build:docs"

types/UIShell/Header.svelte.d.ts

@@ -0,0 +1,86 @@
+/// <reference types="svelte" />
+import { SvelteComponentTyped } from "svelte";
+
+export interface HeaderProps
+  extends svelte.JSX.HTMLAttributes<HTMLElementTagNameMap["a"]> {
+  /**
+   * Set to `false` to hide the side nav by default
+   * @default true
+   */
+  expandedByDefault?: boolean;
+
+  /**
+   * Set to `true` to open the side nav
+   * @default false
+   */
+  isSideNavOpen?: boolean;
+
+  /**
+   * Specify the ARIA label for the header
+   * @default undefined
+   */
+  uiShellAriaLabel?: string;
+
+  /**
+   * Specify the `href` attribute
+   * @default undefined
+   */
+  href?: string;
+
+  /**
+   * Specify the company name
+   * @default undefined
+   */
+  company?: string;
+
+  /**
+   * Specify the platform name
+   * Alternatively, use the named slot "platform" (e.g., <span slot="platform">...</span>)
+   * @default ""
+   */
+  platformName?: string;
+
+  /**
+   * Set to `true` to persist the hamburger menu
+   * @default false
+   */
+  persistentHamburgerMenu?: boolean;
+
+  /**
+   * The window width (px) at which the SideNav is expanded and the hamburger menu is hidden
+   * 1056 represents the "large" breakpoint in pixels from the Carbon Design System:
+   * small: 320
+   * medium: 672
+   * large: 1056
+   * x-large: 1312
+   * max: 1584
+   * @default 1056
+   */
+  expansionBreakpoint?: number;
+
+  /**
+   * Obtain a reference to the HTML anchor element
+   * @default null
+   */
+  ref?: null | HTMLAnchorElement;
+
+  /**
+   * Specify the icon to render for the closed state
+   * Defaults to `Menu20`
+   * @default undefined
+   */
+  iconMenu?: typeof import("svelte").SvelteComponent;
+
+  /**
+   * Specify the icon to render for the opened state
+   * Defaults to `Close20`
+   * @default undefined
+   */
+  iconClose?: typeof import("svelte").SvelteComponent;
+}
+
+export default class Header extends SvelteComponentTyped<
+  HeaderProps,
+  { click: WindowEventMap["click"] },
+  { default: {}; platform: {}; ["skip-to-content"]: {} }
+> {}